Japan

A Japanese high court has today overruled a lower court decision that allowed Shikoku Electric Power Company to continue operating unit 3 of its Ikata nuclear power plant in Ehime Prefecture. Ikata 3 is one of five units that have so far restarted since Japan took all its operable reactors offline for safety checks following the March 2011 accident at the Fukushima Daiichi plant.

Toshiba Corporation has decided to "explore alternatives" to selling to a third party its claims against Westinghouse Electric Company. This would allow the Japanese electronics company to "significantly reduce the internal resources that it is required to allocate to WEC’s rehabilitation proceedings, and to focus them on cultivating its new businesses".

Japan's Nuclear Regulation Authority has today approved a draft report that concludes units 6 and 7 of Tokyo Electric Power Company's Kashiwazaki-Kariwa nuclear power plant meet the country's new safety standards. The draft document has now been released for public comment and could be formally approved by year-end.

The governor of Japan's Fukui Prefecture has today approved the restart of units 3 and 4 of Kansai Electric Power Company's Ohi nuclear power plant. The utility reportedly plans to restart both units by mid-March.

Ukraine's Energoatom and Japan's Toshiba Energy Systems & Solutions Corporation have signed a memorandum of understanding on cooperation in the modernisation of the turbine island equipment of Ukrainian nuclear power plants. Energoatom operates all of Ukraine's four nuclear power plants - Zaporozhe, Rovno, South Ukraine and Khmelnitsky - which comprise 15 nuclear reactors, including 13 VVER-1000s and two VVER-440s with a total capacity of 13,835 MWe.

Some of the fuel in the damaged unit 3 of the Fukushima Daiichi plant has melted and dropped into the primary containment vessel, initial results from using a muon detection system indicate. Part of the fuel, however, is believed to remain in the reactor pressure vessel.